Liquid crystal display panel and manufacturing method thereof

ABSTRACT

Provided are a liquid crystal display panel and a manufacturing method thereof, and more particularly, a liquid crystal display panel including white pixels and a manufacturing method thereof. The liquid crystal display panel includes: a first substrate and a second substrate facing each other; a liquid crystal layer positioned between the first substrate and the second substrate; a plurality of color filters positioned on the first substrate and representing different colors from each other, in which at least two of the plurality of color filters overlap with each other on the first substrate to form an overlapping portion, and the overlapping portion forms a first spacer; a transparent filter positioned on the first substrate and positioned in a transmitting area of a white pixel; and a second spacer including the same material as the transparent filter.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a divisional application of U.S. patent applicationSer. No. 14/568,525 filed on Dec. 12, 2014, which claims priority toKorean Patent Application No. 10-2014-0097531, filed on Jul. 30, 2014 inthe Korean Intellectual Property Office (KIPO), and all the benefitsaccruing therefrom under 35 U.S.C. §119, the contents of the priorapplications being herein incorporated by reference.

BACKGROUND

(a) Technical Field

The present application relates to a liquid crystal display panel and amanufacturing method thereof, and more particularly, to a liquid crystaldisplay panel including white pixels and a manufacturing method thereof.

(b) Description of the Related Art

A liquid crystal display is a typical light-receiving type displaydevice as one of display devices which are widely used presently. Theliquid crystal display includes a liquid crystal display panel includinga plurality of pixels and a backlight unit supplying light to the liquidcrystal display panel. The liquid crystal display panel includes aliquid crystal layer and a field generating electrode generating anelectric field in the liquid crystal layer.

The field generating electrode includes a pixel electrode and an opposedelectrode. The pixel electrode is connected to a switching element suchas a thin film transistor (TFT) to receive a data voltage correspondingto an input image signal. The opposed electrode may receive a commonvoltage and may be formed over the entire surface of the display panel.The intensity of the electric field generated in the liquid crystallayer is controlled by applying the voltages to the pixel electrode andthe opposed electrode to rearrange liquid crystal molecules, and as aresult, a desired image may be displayed by controlling an amount oftransmitted light.

The liquid crystal display includes two substrates facing each otherwith the liquid crystal layer therebetween, and in this case, the fieldgenerating electrodes may be provided on two substrates facing eachother, respectively, and the two field generating electrodes may bepositioned on one substrate.

For example, the pixel electrode receiving the data voltage in the fieldgenerating electrodes and a plurality of thin film transistors arearranged on one of two substrates facing each other, and a plurality ofcolor filters representing basic colors such as red, green, and blue anda light blocking member which may prevent light leakage between thepixels may be formed on the other substrate. Unlike this, at least oneof the light blocking member and the color filter may be formed on thesame substrate as the pixel electrode and the thin film transistor.

The liquid crystal display includes red pixels, green pixels, and bluepixels which may display images of red, green, and blue which are theprimary colors, respectively. The red pixel, the green pixel, and theblue pixel form one dot and may implement various color displays bycontrolling luminance of each pixel. However, since the red pixel, thegreen pixel, and the blue pixel include color filters, an amount oflight emitted from the backlight is decreased by passing through thecolor filters, and as a result, the luminance of the image deteriorates.In order to solve the problem, the liquid crystal display furtherincludes white pixels representing white because color filters are notincluded, in addition to the pixels representing the basic colors. Thewhite pixel does not include the color filter, and as a result, theluminance of the image may be increased.

The above information disclosed in this Background section is only forenhancement of understanding of the background and therefore it maycontain information that does not form the prior art that is alreadyknown in this country to a person of ordinary skill in the art.

SUMMARY

In the case where a liquid crystal display includes white pixels,generally, a material such as a resin for a white filter is deposited onthe entire surface of a substrate and then needs to be patterned by amethod such as a photolithography process. Accordingly, in the case ofadding the white pixels, luminance may be increased, but thephotolithography process is added, and as a result, a processing time,processing cost, and the like are increased, and a manufacturing processis complicated.

Embodiments have been made in an effort to reduce a manufacturing time,manufacturing cost, and the like by simplifying a manufacturing processof a liquid crystal display including white pixels.

An exemplary embodiment provides a liquid crystal display panelincluding: a first substrate and a second substrate facing each other; aliquid crystal layer positioned between the first substrate and thesecond substrate; a plurality of color filters positioned on the firstsubstrate and representing different colors from each other, at leasttwo of the plurality of color filters overlap with each other on thefirst substrate to form an overlapping portion, and the overlappingportion forms a first spacer; a transparent filter positioned on thefirst substrate and positioned in a transmitting area of a white pixel;and a second spacer including the same material as the transparentfilter.

Another exemplary embodiment provides a liquid crystal display panelincluding: a first substrate and a second substrate facing each other; aliquid crystal layer positioned between the first substrate and thesecond substrate; a plurality of color filters positioned on the firstsubstrate and representing different colors from each other; and apassivation layer positioned on the first substrate and the colorfilters and including an organic material, in which at least two of theplurality of color filters overlap with each other on the firstsubstrate to form an overlapping portion, the overlapping portion formsa spacer, a thickness of the passivation layer positioned in atransmitting area of a white pixel is larger than or substantially thesame as a thickness of a color filter of the color filters positioned ina transmitting area of a color pixel, and the thickness of thepassivation layer positioned in the transmitting area of the white pixelis larger than a thickness of the passivation layer positioned in thetransmitting area of the color pixel.

Yet another exemplary embodiment provides a liquid crystal display panelincluding: a first substrate and a second substrate facing each other; aliquid crystal layer positioned between the first substrate and thesecond substrate; and a plurality of color filters positioned on thefirst substrate and representing different colors from each other, inwhich the plurality of color filters includes at least two color filtersin white positioned in a transmitting area of a white pixel andrepresenting different colors from each other, and two or more of the atleast two color filters in white overlap with each other in thetransmitting area of the white pixel to form an overlapping portion inwhite.

Still another exemplary embodiment provides a manufacturing method of aliquid crystal display panel including: forming a plurality of colorfilters representing different colors on a first substrate; and forminga transparent filter and a transparent spacing member on the firstsubstrate through a same process, in which at least two of the pluralityof color filters overlap with each other on the first substrate to forman overlapping portion which protrudes above the first substrate.

Still another exemplary embodiment provides a manufacturing method of aliquid crystal display panel including: forming a plurality of colorfilters representing different colors from each other on a firstsubstrate; and forming a passivation layer including an organic materialon the first substrate, in which at least two of the plurality of colorfilters overlap with each other on the first substrate to form anoverlapping portion which protrudes above the first substrate, athickness of the passivation layer positioned in a transmitting area ofa white pixel is larger than or substantially the same as a thickness ofa color filter of the color filters positioned in a transmitting area ofa color pixel, and the thickness of the passivation layer positioned inthe transmitting area of the white pixel is larger than a thickness ofthe passivation layer positioned in the transmitting area of the colorpixel.

Still another exemplary embodiment provides a manufacturing method of aliquid crystal display panel including: forming a plurality of colorfilters representing different colors from each other on a firstsubstrate, in which the plurality of color filters includes at least twocolor filters in white which are positioned in a transmitting area of awhite pixel and representing different colors from each other, and twoor more of the at least two color filters in white overlap with eachother in the transmitting area of the white pixel to form an overlappingportion in white.

According to the exemplary embodiments, a manufacturing process of theliquid crystal display panel including white pixels is simplified toreduce a manufacturing time, manufacturing costs, and the like.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is a schematic cross-sectional view of a liquid crystal displaypanel according to an exemplary embodiment.

FIG. 1B is a layout view of the liquid crystal display panel accordingto the exemplary embodiment.

FIGS. 2, 3, 4, 5, 6, 7 are cross-sectional views illustrating the liquidcrystal display panel illustrated in FIG. 1B taken along line II-II,respectively.

FIG. 8A is a layout view of a liquid crystal display panel according toanother exemplary embodiment.

FIGS. 8B and 9 are cross-sectional views illustrating the liquid crystaldisplay panel illustrated in FIG. 8A taken along line VIII-VIII,respectively.

FIG. 10A is a layout view of a liquid crystal display panel according toyet another exemplary embodiment.

FIGS. 10B and 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,25, 26, 27, 28, 29, 30, 31, 32, 33 are cross-sectional viewsillustrating the liquid crystal display panel illustrated in FIG. 10Ataken along line X-X, respectively.

FIG. 34A is a layout view of a liquid crystal display panel according tostill another exemplary embodiment.

FIGS. 34B and 35, 36, 37 are cross-sectional views illustrating theliquid crystal display panel illustrated in FIG. 34A taken along lineXXXIV-XXXIV, respectively.

FIG. 38 is a layout view of three adjacent pixels of a liquid crystaldisplay panel according to still another exemplary embodiment.

FIGS. 39, 40, 41, 42, 43, 44 are cross-sectional views illustrating theliquid crystal display panel illustrated in FIG. 38 taken along lineXXXIX-XXXIX, respectively.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The inventive concept will be described more fully hereinafter withreference to the accompanying drawings, in which exemplary embodimentsare shown. As those skilled in the art would realize, the describedembodiments may be modified in various different ways, all withoutdeparting from the spirit or scope of the inventive concept.

In the drawings, the thickness of layers, films, panels, regions, etc.,are exaggerated for clarity. Like reference numerals designate likeelements throughout the specification. It will be understood that whenan element such as a layer, film, region, or substrate is referred to asbeing “on” another element, it can be directly on the other element orintervening elements may also be present. In contrast, when an elementis referred to as being “directly on” another element, there are nointervening elements present.

Accordingly, the drawings and description are to be regarded asillustrative in nature and not restrictive. Like reference numeralsdesignate like elements throughout the specification.

Throughout this specification and the claims that follow, when it isdescribed that an element is “coupled” to another element, the elementmay be “directly coupled” to the other element or “electrically coupled”to the other element through a third element. In addition, unlessexplicitly described to the contrary, the word “comprise” and variationssuch as “comprises” or “comprising”, will be understood to imply theinclusion of stated elements but not the exclusion of any otherelements.

First, a liquid crystal display including a liquid crystal display panelaccording to an exemplary embodiment will be described with reference toFIG. 1A.

Referring to FIG. 1A, a liquid crystal display 1 according to anexemplary embodiment includes a liquid crystal display panel 300 and abacklight unit 900 supplying light to the liquid crystal display panel300. The light supplied by the backlight unit 900 may be white light,and also be light of a basic color having a predetermined wavelength.

The liquid crystal display panel 300 includes a thin film transistorpanel 100 and an opposed panel 200 facing each other, and a liquidcrystal layer 3 positioned between the two panels 100 and 200. Althoughnot illustrated, when viewed on a plane, the liquid crystal displaypanel 300 according the exemplary embodiment includes a display areadisplaying an image, and the display area includes a plurality ofpixels. Herein, viewing the liquid crystal display panel 300 on theplane means that the liquid crystal display panel 300 is viewed from anobserving direction in a vertical direction to an upper surface or alower surface of the liquid crystal display panel 300.

The thin film transistor panel 100 includes a plurality of thin filmtransistors and a plurality of signal lines connected thereto. Thesignal lines may include a gate line transferring a gate signal to thethin film transistor and a data line transferring a data signal to thethin film transistor. The thin film transistor, as a switching element,may be controlled according to the gate signal to transfer a datavoltage of the data line.

A plurality of color filters may be positioned on the opposed panel 200,but is not limited thereto. The color filters may transmit light of acolor having a predetermined wavelength, not white, and may include aplurality of basic color filters for implementing a color display. Anexample of the basic color may include the three primary colors of red,green, and blue. The color filter may be positioned on the thin filmtransistor panel 100.

The liquid crystal layer 3 includes liquid crystal molecules (notillustrated). The liquid crystal layer 3 may have positive dielectricanisotropy or negative dielectric anisotropy. When an electric field isnot applied to the liquid crystal layer 3, the liquid crystal moleculesmay be aligned so that long axes are almost horizontal or vertical tothe surface of the thin film transistor panel 100 or the opposed panel200. To this end, an alignment layer may be formed on an inner surfaceof the thin film transistor panel 100 or the opposed panel 200. Thealignment layer may be formed by a method of physical treatment such asrubbing, optical treatment such as light irradiation, or a chemicaltreatment after coating an aligning agent on the inner surface of thepanel. Further, the alignment layer or the liquid crystal layer 3 mayinclude an alignment assisting means such as a polymer for aligning theliquid crystal molecules or giving a pretilt. The alignment assistingmeans may be formed by an optical or chemical method.

The thin film transistor panel 100 according to the exemplary embodimentincludes a pixel electrode (not illustrated) receiving a data voltagethrough the thin film transistor. The opposed panel 200 or the thin filmtransistor panel 100 includes an opposed electrode (not illustrated).Both the pixel electrode and the opposed electrode are field generatingelectrodes which may generate the electric field in the liquid crystallayer 3. When the voltages are applied to the pixel electrode and theopposed electrode, the electric field is generated in the liquid crystallayer 3, and the liquid crystal molecules are rearranged. Therearrangement degree of the liquid crystal molecules may be controlledby controlling the intensity of the electric field generated in theliquid crystal layer 3, and as a result, a change degree of polarizationof light passing through the liquid crystal layer 3 may be controlled.Then, the light passing through the liquid crystal layer 3 may controltransmittance through a polarizer and the like to display an image.

Next, a detailed structure of the opposed panel 200 included in theliquid crystal display panel according to the exemplary embodiment willbe described with reference to FIGS. 1B and 2 to 9 in addition to FIG.1A.

FIG. 1B is a layout view of the liquid crystal display panel accordingto the exemplary embodiment, FIGS. 2 to 7 are cross-sectional viewsillustrating the liquid crystal display panel illustrated in FIG. 1Btaken along line II-II, respectively, FIG. 8A is a layout view of aliquid crystal display panel according to another exemplary embodiment,and FIGS. 8B and 9 are cross-sectional views illustrating the liquidcrystal display panel illustrated in FIG. 8A taken along line VIII-VIII,respectively.

Referring to FIGS. 1B and 2, the liquid crystal display panel accordingto the exemplary embodiment includes a plurality of pixels, and theplurality of pixels includes a plurality of color pixels PX_1, PX_2, andPX_3, and white pixels PX_W. The plurality of pixels may be arrangedsubstantially in a matrix form, but is not limited thereto.

The color pixels PX_1, PX_2, and PX_3 representing different colors andthe white pixel PX_W adjacent thereto form one dot together to displayan image having various colors including gray, white, and black.Particularly, the white pixel PX_W is transparent without representingthe colors to increase the luminance of the image represented by a dotto which the white pixel belongs.

Here, the pixel may mean a unit area in which an image corresponding toone input image signal is displayed, and include a transmitting area(referred to as an aperture area) in which light is actually transmittedor emitted and a light blocking area in which the light is blocked. Inthe light blocking area, an electric device such as a thin filmtransistor of the corresponding pixel or a light blocking member 220 maybe positioned.

In the exemplary embodiment, only three kinds of color pixels PX_1,PX_2, and PX_3 are illustrated, but the number of color pixels PX_1,PX_2, and PX_3 representing different colors is not limited thereto.Further, it is illustrated that one dot includes only one white pixelPX_W, but the number of white pixels PX_W included in one dot is notlimited thereto.

The opposed panel 200 according to the exemplary embodiment includescolor filters 230, a white filter 330, and the light blocking member 220which are positioned on a substrate 210, when viewed in across-sectional structure.

The substrate 210 may be made of an insulating material such as glass,plastic, or the like.

The light blocking member 220 may be positioned on the substrate 210.The light blocking member 220 positioned in the display area is called ablack matrix, and has a plurality of openings defining transmittingareas of the pixels PX_1, PX_2, PX_3, and PX_W. The light blockingmember 220 is positioned between the adjacent pixels PX_1, PX_2, PX_3,and PX_W to prevent light leakage. The light blocking member 220 mayinclude a pigment for blocking light such as black carbon, and include aphotosensitive organic material.

The plurality of color filters 230 is positioned on the substrate 210and the light blocking member 220. The color filter 230 includes apigment representing a color, and may include a binder, aphotoinitiator, and an organic material such as a monomer. The colorfilters 230 may include a red filter, a green filter, and a blue filterwhich may represent three primary colors such as red, green, and blue,respectively. However, the colors represented by the color filters 230are not limited thereto, and may represent other basic colors, forexample, three primary colors such as magenta, cyan, and yellow.

The color filter 230 representing the corresponding color is positionedon one of the color pixels PX_1, PX_2, and PX_3. On a partial area ofthe substrate 210, the light blocking member 220, and at least two ofthe plurality of color filters 230 are stacked to overlap with eachother to form an overlapping portion OP. The overlapping portion OP maybe positioned at a place which overlaps with the light blocking member220, the thin film transistor of the thin film transistor panel 100, andthe signal lines such as the gate line and the data line, but is notlimited thereto. FIG. 2 illustrates an example in which two colorfilters 230 having different colors are stacked to overlap with eachother on the light blocking member 220. Unlike those illustrated in FIG.2, the light blocking member 220 may not be positioned below the colorfilters 230 overlapping with each other.

For convenience, the color filter 230 positioned at the bottom among thecolor filters 230 forming the overlapping portion OP is called a firstcolor filter 230_1, and a color filter at an n-th (n is a natural numberof 2 or more) position thereon is called an n-th color filter 230_n.

The color filters 230 overlapping with each other to form theoverlapping portion OP may be connected with or spaced apart from thecolor filters 230 of the adjacent color filters PX_1, PX_2, and PX_3 asillustrated in FIG. 2. At the overlapping portion OP, a thickness B1 ofthe first color filter 230_1 positioned on the light blocking member 220may be smaller than a thickness B0 of the color filter 230 positioned inthe transmitting areas of the color pixels PX_1, PX_2, and PX_3. Forexample, the thickness B1 may be about 30% to about 70% of the thicknessB0. The thickness B0 of the color filter 230 positioned in thetransmitting areas of the color pixels PX_1, PX_2, and PX_3 may be about1.5 μm to about 2.5 μm, but is not limited thereto.

At the overlapping portion OP, a thickness B2 of a second color filter230_2 positioned on the first color filter 230_1 may be smaller than thethickness B0 of the color filter 230 positioned in the transmittingareas of the color pixels PX_1, PX_2, and PX_3 and the thickness B1 ofthe first color filter 230_1. For example, the thickness B2 may besmaller than the thickness B1 and may be about 20% to about 50% of thethickness B0. Furthermore, a thickness of the n-th color filter 230_n(e.g., the thickness B2 of the second color filter 230_2) may be smallerthan a thickness of an n−1-th color filter 230_n−1 therebelow (e.g., thethickness B1 of the first color filter 230_1), and for example, may beabout 30% to about 70% of the thickness of the n−1-th color filter230_n−1.

The thickness of the color filters 230 forming the overlapping portionOP may be controlled according to an area of the overlapping region.

At the overlapping portion OP, an overlapping region of the n-th colorfilter 230_n may be smaller than or the same as an overlapping region ofthe n−1-th color filter 230_n−1 therebelow. Further, the overlappingregion of the n-th color filter 230_n with the n−1-th color filter230_n−1 may be positioned in the overlapping region of the n−1-th colorfilter 230_n−1 and a layer therebelow.

An overlapping width of the color filter 230 positioned at the top amongthe color filters 230 forming the overlapping portion OP may be, forexample, 20 μm to about 50 μm. Here, the overlapping width means a widthof a portion overlapping with the layer therebelow. In the exemplaryembodiment illustrated in FIG. 2, an overlapping width A2 of the secondcolor filter 230_2 overlapping with the first color filter 230_1 may beabout 20 μm to about 50 μm, and an overlapping width A1 of the firstcolor filter 230_1 overlapping with the light blocking member 220 may belarger than or the same as the overlapping width A2.

When the overlapping portion is formed by a design condition asdescribed above, the overlapping portion may be stably formed.

An overcoat layer 250 is entirely formed on the color filter 230 and thesubstrate 210. The overcoat layer 250 includes a transparent organicmaterial, and flatness on the substrate 210 may be controlled byproperly controlling the viscosity. A height of the upper surface of theovercoat layer 250 in the transmitting area of the white pixel PX_W maybe smaller than a height of the upper surface of the overcoat layer 250in the transmitting areas of the color pixels PX_1, PX_2, and PX_3, anda difference in height may vary according to the viscosity of theovercoat layer 250.

A transparent filter 330 and a transparent spacing member 350 arepositioned on the overcoat layer 250.

The transparent filter 330 is also referred to as a white filter. Thetransparent filter 330 uses a term of a filter for convenience, butmeans a filter in which a wavelength of light passing through thetransparent filter 330 is not substantially changed and the color of thetransmitted light may be almost maintained. That is, when white light isincident to the transparent filter 330, the white light is emitted as itis, and when green light is incident to the transparent filter 330, thegreen light may be emitted as it is. However, the wavelength of thetransmitted light may be changed in a predetermined range according to acharacteristic of the transparent filter 330. For example, in the casewhere the green light passes through the transparent filter 330, eventhough the green light is emitted, the green light in which a colorcoordinate is changed in a predetermined range may be emitted.

The transparent filter 330 includes a portion positioned in thetransmitting area of the white pixel PX_W. The transparent filter 330 ispositioned at a portion where the height of the upper surface of theovercoat layer 250 is small so as to compensate for a difference inheight of the overcoat layer 250. Accordingly, the height of the uppersurface of the overcoat layer 250 in the color pixels PX_1, PX_2, andPX_3 is substantially similar to the height of the upper surface of thetransparent filter 330 in the white pixel PX_W, and as a result, theovercoat layer 250 may be entirely flattened. As a result, a cell gap ofthe white pixel PX_W may be similar to or substantially the same as cellgaps of the color pixels PX_1, PX_2, and PX_3. Then, when the liquidcrystal display panel is viewed from the side, it is possible to preventa color coordinate from being distorted. Particularly, in the exemplaryembodiment, the overall flatness is easily controlled by properlycontrolling at least one of the viscosity of the overcoat layer 250 andthe thickness of the transparent filter 330.

As illustrated in FIG. 2, the transparent spacing member 350 may bepositioned on at least one of the plurality of overlapping portions OPformed so that the light blocking member 220 and at least two of theplurality of color filters 230 are stacked to overlap with each other,and may be positioned at a place except for the transmitting area of thepixel of the place except for the overlapping portion OP. Particularly,as illustrated in FIG. 2, in the case where the transparent spacingmember 350 is positioned at a place overlapping with the overlappingportion OP, the overlapping portion OP, the transparent spacing member350, and the overcoat layer 250 therebetween has an upper surface higherthan the periphery and protrudes to form a main spacer CS_M. The mainspacer CS_M may serve to maintain the cell gap of the liquid crystallayer 3, that is, a space between the opposed panel 200 and the thinfilm transistor panel 100.

The upper surface of the overlapping portion OP where the transparentspacing member 350 is not positioned is lower than the upper surface ofthe main spacer CS_M, but higher than the periphery and protrudes toform a sub spacer CS_S. The sub spacer CS_S may serve to maintain thecell gap of the liquid crystal layer 3 even in the case where theopposed panel 200 or the thin film transistor panel 100 is bent inwardsby external pressure.

A width A10 of the transparent spacing member 350 may be smaller than orthe same as the overlapping width A2 of the second color filter 230_2positioned at the top of the overlapping portion OP. Further, theoverlapping region of the transparent spacing member 350 with the secondcolor filter 230_2 may be positioned in the overlapping region of thesecond color filter 230_2 and the first color filter 230_1 therebelow.

The transparent spacing member 350 and the transparent filter 330 may beformed with the same material in the same process. The transparentspacing member 350 and the transparent filter 330 may include atransparent organic material, and for example, may include anacryl-based resin and the like.

A thickness B10 of the transparent spacing member 350 may be the same asor different from a thickness B11 of the transparent filter 330. In theexemplary embodiment, since the transparent spacing member 350 ispositioned at a place higher than the transparent filter 330, an examplein which the thickness B10 of the transparent spacing member 350 issmaller than the thickness B11 of the transparent filter 330 isillustrated, but is not limited thereto, and the thickness B11 of thetransparent filter 330 may be smaller than the thickness B10 of thetransparent spacing member 350. According to another exemplaryembodiment, the thickness B10 of the transparent spacing member 350 andthe thickness B11 of the transparent filter 330 may be formed so as tobe different from each other by using a photomask including a halftone.

An opposed electrode 270 is positioned on the overcoat layer 250 and thetransparent filter 330. The opposed electrode 270 may include atransparent conductive material such as ITO and IZO, and transfer acommon voltage. The opposed electrode 270 may be patterned, and theopposed electrode 270 is not positioned on the transparent spacingmember 350 and the overlapping portion OP.

When a manufacturing method of the opposed panel 200 will be described,first, a material for the light blocking member is deposited on thesubstrate 210, and the light blocking member 220 having a plurality ofopenings is formed by a photolithography process of exposing anddeveloping the material.

Next, a plurality of color filters 230 is formed on the light blockingmember 220. Particularly, as illustrated in FIG. 2, an overlappingportion OP where the light blocking member 220 and at least two of theplurality of color filters 230 overlap with each other is formed. Inthis case, the patterning of the color filter 230 may use a photographicprocess.

Next, an organic material is deposited on the entire surface of thesubstrate 210 to form the overcoat layer 250.

Next, a transparent organic material is deposited and patterned on theovercoat layer 250 to form the transparent spacing member 350 and thetransparent filter 330 together. In this case, the patterning of thetransparent spacing member 350 and the transparent filter 330 may use aphotolithography process using one photomask.

Next, a transparent conductive material is deposited and patterned onthe overcoat layer 250 and the transparent filter 330 to form theopposed electrode 270.

As such, according to the exemplary embodiment, since the transparentspacing member 350 forming the main spacer CS_M and the transparentfilter 330 of the white pixel PX_W are simultaneously formed by onephotolithography process, the process may be simplified without addingthe photomask and the photolithography process, and a processing timeand processing cost may be reduced. As described above, the transparentfilter 330 is formed so that the cell gap of the white pixel PX_W is thesame as the cell gaps of the color pixels PX_1, PX_2, and PX_3 toprevent a change in color coordinate at the side and increase displayquality.

Furthermore, according to the exemplary embodiment, since the lightblocking member 220 and at least two of the plurality of color filters230 overlap with each other to form a plurality of overlapping portionsOP and the transparent spacing member 350 is formed at a part of theoverlapping portions OP, both the main spacer CS_M and the sub spacerCS_S having different heights may be easily formed without an additionalprocess, and the cell gap of the liquid crystal display panel may bestably maintained even by various external pressures.

Further, according to the exemplary embodiment, the main spacer CS_M andthe sub spacer CS_S may be stably formed.

The opposed panel 200 manufactured as described above is attached to thethin film transistor panel 100 separately manufactured, and a liquidcrystal material is injected between the two substrates 110 and 210 tocomplete the liquid crystal display panel. The thin film transistorpanel 100 includes the substrate 110 as described below.

Next, FIG. 3 illustrates an example in which the opposed panel 200according to the exemplary embodiment is almost the same as that of theexemplary embodiment illustrated in FIGS. 1B and 2, but three colorfilters 230 having different colors overlap with each other to form theoverlapping portion OP on the light blocking member 220. That is, theoverlapping portion OP may include the light blocking member 220, thefirst color filter 230_1 thereon, the second color filter 230_2 thereon,and the third color filter 230_3 thereon.

At the overlapping portion OP, a thickness B1 of the first color filter230_1 positioned on the light blocking member 220 may be smaller than athickness B0 of the color filter 230 positioned in the transmittingareas of the color pixels PX_1, PX_2, and PX_3, and for example, thethickness B1 may be about 30% to about 70% of the thickness B0. At theoverlapping portion OP, a thickness B2 of the second color filter 230_2may be smaller than the thickness B1 of the first color filter 230_1,and for example, may be about 20% to about 50% of the thickness B0.Further, a thickness B3 of the third color filter 230_3 may be smallerthan the thickness B2 of the second color filter 230_2, and for example,may be about 10% to about 40% of the thickness B0.

An overlapping width A3 of the third color filter 230_3 positioned atthe top of the color filters 230 forming the overlapping portion OP maybe, for example, about 20 μm to about 50 μm, the overlapping width A2 ofthe second color filter 230_2 therebelow may be larger than theoverlapping width A3, and the overlapping width A1 of the first colorfilter 230_1 may be larger than the overlapping width A2.

In the exemplary embodiment, the width A10 of the transparent spacingmember 350 positioned on the overlapping portion OP is smaller than orthe same as the overlapping width A3 of the third color filter 230_3positioned on the top of the overlapping portion OP to be stablystacked.

Besides, various features and effects of the exemplary embodiment ofFIGS. 1B and 2 may be equally applied even to the exemplary embodiment,and the duplicated description will be omitted.

Referring now to FIG. 4, the opposed panel 200 according to theexemplary embodiment is almost the same as that of the exemplaryembodiment illustrated in FIGS. 1B and 2, but the transparent spacingmember 350 may be positioned at the overlapping portion OP and anotherplace except for the transmitting area of the pixel which is notpositioned on the overlapping portion OP, for example, a placeoverlapping with the light blocking member 220 or the thin filmtransistor.

In this case, heights of the upper surface of the overlapping portion OPwhere the light blocking member 220 and at least two of the plurality ofcolor filters 230 overlap with each other and the upper surface of thetransparent spacing member 350 may be different from each other orsubstantially the same as each other. As illustrated in FIG. 4, when theupper surface of the overlapping portion OP is higher than the uppersurface of the transparent spacing member 350, the overlapping portionOP forms the main spacer CS_M together with the overcoat layer 250thereon and the like, and the transparent spacing member 350 may formthe sub spacer CS_S. Unlike this, when the upper surface of theoverlapping portion OP and the upper surface of the transparent spacingmember 350 are substantially the same as each other, the overlappingportion OP and the transparent spacing member 350 may serve as the samespacer CS.

Besides, various features and effects of the exemplary embodiment ofFIGS. 1B and 2 may be equally applied even to the exemplary embodiment,and the duplicated description will be omitted.

Next, FIG. 5 illustrates an example in which the opposed panel accordingto the exemplary embodiment is almost the same as that of the exemplaryembodiment illustrated in FIG. 4, but three color filters 230 havingdifferent colors overlap with each other to form the overlapping portionOP on the light blocking member 220. That is, the overlapping portion OPmay include the light blocking member 220, the first color filter 230_1thereon, the second color filter 230_2 thereon, and the third colorfilter 230_3 thereon.

Besides, various features and effects of the exemplary embodiment ofFIG. 4 and the exemplary embodiment of FIG. 3 may be equally appliedeven to the exemplary embodiment, and the duplicated description will beomitted.

Next, FIG. 6 illustrates an example in which the opposed panel accordingto the exemplary embodiment is almost the same as that of the exemplaryembodiment illustrated in FIG. 4, but the upper surface of theoverlapping portion OP is lower than the upper surface of thetransparent spacing member 350. In this case, the overlapping portion OPforms the sub spacer CS_S together with the overcoat layer 250 thereonand the like, and the transparent spacing member 350 may form the mainspacer CS_M. Unlike this, when the upper surface of the overlappingportion OP and the upper surface of the transparent spacing member 350are substantially the same as each other, the overlapping portion OP andthe transparent spacing member 350 may serve as the same spacer CS.

Next, FIG. 7 illustrates an example in which the opposed panel accordingto the exemplary embodiment is almost the same as that of the exemplaryembodiment illustrated in FIG. 6, but three color filters 230 havingdifferent colors overlap with each other to form the overlapping portionOP on the light blocking member 220. That is, the overlapping portion OPmay include the light blocking member 220, the first color filter 230_1thereon, the second color filter 230_2 thereon, and the third colorfilter 230_3 thereon.

Besides, various features and effects of the exemplary embodiment ofFIG. 6 and the exemplary embodiment of FIG. 3 may be equally appliedeven to the exemplary embodiment, and the duplicated description will beomitted.

Next, referring to FIGS. 8A and 8B, the opposed panel according to theexemplary embodiment is almost the same as that of the exemplaryembodiment illustrated in FIGS. 1B and 2, but the transparent filter 330and the transparent spacing member 350 are not formed. That is, in thewhite pixel PX_W, a separate transparent filter is not formed and aseparate spacer for maintaining the cell gap is not formed. Accordingly,the photolithography process for forming the transparent filter and thetransparent spacing member may be omitted, and as a result, themanufacturing process is more simplified. Instead, the upper surface ofthe overlapping portion OP formed when the light blocking member 220 andat least two of the plurality of color filters 230 overlap with eachother is formed to be higher than the periphery, and as a result, theoverlapping portion OP and the overcoat layer 250 thereon serve as aspacer CS maintaining the cell gap together.

The transmitting area of the white pixel PX_W may be almost filled bythe overcoat layer 250. Accordingly, the thickness of the overcoat layer250 positioned in the transmitting area of the white pixel PX_W may besubstantially the same as or larger than the thickness of the colorfilter 230 positioned in the transmitting area of the color pixels PX_1,PX_2, and PX_3. Further, the thickness of the overcoat layer 250positioned in the transmitting area of the white pixel PX_W may belarger than the overcoat layer 250 positioned on the color filters 230of the color pixels PX_1, PX_2, and PX_3. Accordingly, in the whitepixel PX_W, the height of the upper surface of the overcoat layer 250may be the same as or higher than the height of the upper surface of thecolor filter 230 positioned in the transmitting area of the color pixelsPX_1, PX_2, and PX_3.

Since the upper surface of the overcoat layer 250 in the white pixelPX_W sags below the upper surface of the overcoat layer 250 in the colorpixels PX_1, PX_2, and PX_3, the overcoat layer 250 may include a highflattened organic material having sufficient viscosity so as to preventthe cell gap of the white pixel PX_W from being different from the cellgap of the color pixels PX_1, PX_2, and PX_3.

Next, FIG. 9 illustrates an example in which the opposed panel accordingto the exemplary embodiment is almost the same as that of the exemplaryembodiment illustrated in FIGS. 8A and 8B, but three color filters 230having different colors overlap with each other to form the overlappingportion OP on the light blocking member 220. That is, the overlappingportion OP may include the light blocking member 220, the first colorfilter 230_1 thereon, the second color filter 230_2 thereon, and thethird color filter 230_3 thereon.

Besides, various features and effects of the exemplary embodiment ofFIGS. 8A and 8B and the exemplary embodiment of FIG. 3 may be equallyapplied even to the exemplary embodiment, and the duplicated descriptionwill be omitted.

Next, a detailed structure of the opposed panel 100 included in theliquid crystal display panel according to the exemplary embodiment willbe described with reference to FIGS. 10A, 10B, and 11 to 37 in additionto FIG. 1A.

FIG. 10A is a layout view of a liquid crystal display panel according toyet another exemplary embodiment, FIGS. 10B and 11 to 33 arecross-sectional views illustrating the liquid crystal display panelillustrated in FIG. 10A taken along line X-X, respectively, FIG. 34A isa layout view of a liquid crystal display panel according to stillanother exemplary embodiment, and FIGS. 34B and 35 to 37 arecross-sectional views illustrating the liquid crystal display panelillustrated in FIG. 34A taken along line XXXIV-XXXIV, respectively.

Referring to FIGS. 10A and 10B, the thin film transistor panel 100according to the exemplary embodiment includes a plurality of thin filmtransistors positioned on a substrate 110, a pixel electrode 191connected thereto, and the like.

The substrate 110 may be made of an insulating material such as glass,plastic, or the like.

A gate conductor (not illustrated) including a gate line is positionedon the substrate 110, and a gate insulating layer 140 is positionedthereon. The gate insulating layer 140 may include an organic insulatingmaterial such as silicon nitride and silicon oxide.

A semiconductor layer (not illustrated) and a data conductor arepositioned on the gate insulating layer 140. The data conductor includesa plurality of data lines 171 transferring data voltages. The data line171 may be almost extended between the adjacent pixels, but is notlimited thereto. FIG. 10B illustrates an example in which the data line171 is positioned between the adjacent pixels. In the case where thedata line 171 includes a portion extended between the adjacent pixels,the data line 171 may be covered by the light blocking member positionedon the thin film transistor panel 100 or the opposed panel 200.

The thin film transistor is connected with the gate line and the dataline 171.

A first passivation layer 180 a is positioned on the thin filmtransistor including the data conductor. The first passivation layer 180a may include an inorganic insulating material or an organic insulatingmaterial.

A plurality of color filters 230 is positioned on the first passivationlayer 180 a. A color filter 230 representing the corresponding color ispositioned one of the color pixels PX_1, PX_2, and PX_3. On a partialarea of the substrate 110, at least two of the plurality of colorfilters 230 are stacked to overlap with each other to form anoverlapping portion OP. FIG. 10B illustrates an example in which twocolor filters 230 of a first color filter 230_1 and a second colorfilter 230_2 overlap with each other to form the overlapping portion OP.The overlapping portion OP may be positioned at a place overlapping withthe thin film transistor, the gate line, the data line 171, the lightblocking member of the opposed panel 200, and the like, but is notlimited thereto.

The light blocking member may be positioned on the opposed panel 200 orthe thin film transistor panel 100, and when the light blocking memberis positioned on the thin film transistor panel 100, the overlappingportion OP may overlap with the light blocking member.

The overlapping portion OP may overlap with the data line 171 or beadjacent to the data line 171.

The second color filter 230_2 or a color filter positioned thereon ofthe color filters forming the overlapping portion OP may be connectedwith the color filter of the adjacent color pixels PX_1, PX_2, and PX_3,or may be spaced apart from the color filter of the adjacent colorpixels PX_1, PX_2, and PX_3 as illustrated in FIG. 10B. The first colorfilter 230_1 may include a portion positioned in the transmitting areaof the color pixels PX_1, PX_2, and PX_3.

At the overlapping portion OP, a thickness D2 of the second color filter230_2 may be smaller than a thickness D1 of the first color filter 230_1positioned therebelow. For example, the thickness D2 may be about 30% toabout 70% of the thickness D1. Furthermore, a thickness of the n-thcolor filter 230_n configuring the overlapping portion OP may be smallerthan a thickness of an n−1-th color filter 230_n−1 therebelow, and forexample, may be about 30% to about 70% of the thickness of the n−1-thcolor filter 230_n−1. The thickness of the color filter positioned atthe bottom may be about 2.5 μm to about 4.0 μm, but is not limitedthereto.

Similarly to the exemplary embodiment described above, at theoverlapping portion OP, an overlapping area of the n-th color filter230_n may be smaller than or the same as an overlapping area of then−1-th color filter 230_n−1 therebelow. Further, the overlapping area ofthe n-th color filter 230_n with the n−1-th color filter 230_n−1 may bepositioned in the overlapping area of the n−1-th color filter 230_n−1and a layer therebelow. The layer below the n−1-th color filter 203_n−1may be another color filter or the first passivation layer 180 a.

An overlapping width of the color filter 230 positioned at the top amongthe color filters 230 forming the overlapping portion OP may be, forexample, about 20 μm to about 50 μm. In the exemplary embodimentillustrated in FIG. 10B, an overlapping width C2 of the second colorfilter 230_2 may be about 20 μm to about 50 μm.

A transparent filter 330 and a transparent spacing member 350 may bepositioned on the color filter 230 and the first passivation layer 180a.

The transparent filter 330 includes a portion which is positioned in thetransmitting area of the white pixel PX_W, and the upper surface thereofmay have substantially the same height as the upper surface of the colorfilter 230 of the color pixels PX_1, PX_2, and PX_3. Accordingly, theupper surface of the substrate 110 may be substantially flattened, andthe cell gap of the white pixel PX_W may be formed substantially thesame as the cell gap of the color pixels PX_1, PX_2, and PX_3. As aresult, when the liquid crystal display panel is viewed from the side,it is possible to prevent a color coordinate from being distorted.

As illustrated in FIG. 10B, the transparent spacing member 350 may bepositioned on at least one of the plurality of overlapping portions OPformed so that at least two of the plurality of color filters 230 arestacked to overlap with each other, and may be positioned at a placeexcept for the transmitting area of the pixel of the place except forthe overlapping portion OP. Particularly, as illustrated in FIG. 10B, inthe case where the transparent spacing member 350 is positioned at aplace overlapping with the overlapping portion OP, the overlappingportion OP and the transparent spacing member 350 protrude with an uppersurface higher than the periphery to form a main spacer CS_M.

The upper surface of the overlapping portion OP where the transparentspacing member 350 is not positioned is lower than the upper surface ofthe main spacer CS_M, but protrudes to be higher than the periphery toform a sub spacer CS_S.

A width C10 of the transparent spacing member 350 may be smaller than orthe same as the overlapping width C2 of the second color filter 230_2positioned at the top of the overlapping portion OP. Further, theoverlapping region of the transparent spacing member 350 with the secondcolor filter 230_2 may be positioned in the overlapping region of thesecond color filter 230_2 and the first color filter 230_1 therebelow.

The transparent spacing member 350 and the transparent filter 330 may beformed with the same material in the same process. The transparentspacing member 350 and the transparent filter 330 may include atransparent organic material, and for example, may include anacryl-based resin and the like.

A thickness D10 of the transparent spacing member 350 may be the same asor different from a thickness D11 of the transparent filter 330. In theexemplary embodiment, since the transparent spacing member 350 ispositioned at a place higher than the transparent filter 330, thethickness D10 of the transparent spacing member 350 may be smaller thanthe thickness D11 of the transparent filter 330. According to anotherexemplary embodiment, the thickness D10 of the transparent spacingmember 350 and the thickness D11 of the transparent filter 330 may bedifferent from each other by using a photomask including a halftone.

A capping layer 80 may be positioned on the second color filter 230_2,the transparent spacing member 350, and the transparent filter 330. Thecapping layer 80 prevents the color filter 230 and the transparentfilter 330 therebelow from being lifted and suppresses the contaminationof the liquid crystal layer 3 due to an organic material such as asolvent flowing into from the color filter 230, thereby preventingdefects such as an afterimage which may be caused when the liquidcrystal display panel is driven.

A plurality of pixel electrodes 191 and shielding electrodes 199 arepositioned on the capping layer 80. The pixel electrode 191 and theshielding electrode 199 may include a transparent conductive materialsuch as ITO or IZO.

The pixel electrode 191 is patterned to have a shape including aplurality of branch electrodes (not illustrated), but is not limitedthereto. The pixel electrode 191 is connected with the thin filmtransistor through contact holes (not illustrated) formed in at least apart of the capping layer 80, the first passivation layer 180 a, and thegate insulating layer 140 to receive a data voltage.

The shielding electrode 199 may include a portion covering the data line171. The shielding electrode 199 shields an electric field from the dataline 171 to prevent light leakage between the adjacent pixels.Accordingly, a separate light blocking member overlapping with the dataline 171 need not be formed to increase an aperture ratio andtransmittance of the pixels.

When a manufacturing method of the thin film transistor panel 100 willbe described, first, metal and the like are deposited and patterned onthe substrate 110 to form a gate conductor including a gate line.

Next, the gate insulating layer 140 is deposited on the gate conductor,a semiconductor layer is deposited thereon, and metal and the like aredeposited and patterned thereon to form a data conductor including adata line 171. The gate conductor, the semiconductor layer, and the dataconductor may form a plurality of thin film transistors together.

Next, an insulating material is deposited on the thin film transistor toform the passivation layer 180 a, and a plurality of color filters 230is formed thereon. Particularly, as illustrated in FIG. 10B, anoverlapping portion OP where at least two of the plurality of colorfilters 230 overlap with each other is formed. In this case, thepatterning of the color filters 230 may use a photolithography process.

Next, a transparent organic material is deposited and patterned on thecolor filter and the first passivation layer 180 a to form thetransparent filter 330 and the transparent spacing member 350. In thiscase, the patterning may use a photolithography process using onephotomask.

Next, the capping layer 80 is deposited on the entire surface of thesubstrate 110, and then the capping layer 80, the first passivationlayer 180 a, and the gate insulating layer 140 are patterned by aphotolithography process and the like to form contact holes.

Next, a transparent conductive material such as ITO and IZO is depositedand patterned on the capping layer 80 to form a plurality of pixelelectrodes 191 and shielding electrodes 199.

As such, according to the exemplary embodiment, since the transparentspacing member 350 forming the main spacer CS_M and the transparentfilter 330 of the white pixel PX_W are simultaneously formed by onephotolithography process, the process may be simplified without addingthe photomask and the photolithography process, and a processing timeand processing cost may be reduced. As described above, the transparentfilter 330 is formed so that the cell gap of the white pixel PX_W is thesame as the cell gaps of the color pixels PX_1, PX_2, and PX_3 toprevent a change in color coordinate at the side and increase displayquality.

Furthermore, according to the exemplary embodiment, since at least twoof the plurality of color filters 230 overlap with each other to form aplurality of overlapping portions OP and the transparent spacing member350 is formed at a part of the overlapping portions OP, both the mainspacer CS_M and the sub spacer CS_S having different heights may beeasily formed without an additional process, and the cell gap of theliquid crystal display panel may be stably maintained even due tovarious external pressures.

The thin film transistor panel 100 manufactured as described above isattached to the opposed panel 200 separately manufactured, and a liquidcrystal material is injected between the two substrates 110 and 210 tocomplete the liquid crystal display panel.

Next, FIG. 11 illustrates an example in which the thin film transistorpanel 100 according to the exemplary embodiment is almost the same asthat of the exemplary embodiment illustrated in FIGS. 10A and 10B, butthree color filters 230 having different colors overlap with each otherto form an overlapping portion OP. That is, the overlapping portion OPmay include a first color filter 230_1, a second color filter 230_2thereon, and a third color filter 230_3 thereon.

At the overlapping portion OP, a thickness D2 of the second color filter230_2 may be smaller than a thickness D1 of the first color filter 230_1therebelow or the first color filter 230_1 positioned in thetransmitting area of the color pixels PX_1, PX_2, and PX_3, and forexample, the thickness D2 may be about 30% to about 70% of the thicknessD1. At the overlapping portion OP, a thickness D3 of the third colorfilter 230_3 may be smaller than the thickness D2 of the second colorfilter 230_2, and for example, may be about 20% to about 50% of thethickness D1 of the first color filter 230_1.

An overlapping width C3 of the third color filter 230_3 positioned atthe top of the color filters 230 forming the overlapping portion OP maybe, for example, about 20 μm to about 50 μm, and an overlapping width C2of the second color filter 230_2 therebelow is larger than theoverlapping width C3.

In the exemplary embodiment, a width C10 of the transparent spacingmember 350 positioned on the overlapping portion OP is smaller than orthe same as the overlapping width C3 of the third color filter 230_3positioned on the top of the overlapping portion OP to be stablystacked.

Besides, various features and effects of the exemplary embodiment ofFIGS. 10A and 10B may be equally applied even to the exemplaryembodiment, and the duplicated description will be omitted.

Next, referring to FIG. 12, the thin film transistor panel 100 accordingto the exemplary embodiment is almost the same as that of the exemplaryembodiment illustrated in FIGS. 10A and 10B, but positions of thecapping layers 80 may be different from each other. For example, asillustrated in FIG. 12, the capping layer 80 is positioned below thetransparent filter 330 and the transparent spacing member 350, and maybe positioned on the second color filter 230_2 of the overlappingportion OP and the first passivation layer 180 a. The capping layer 80prevents the color filter 230 therebelow from being lifted andsuppresses the contamination of the liquid crystal layer 3 due to anorganic material such as a solvent flowing into from the color filter230, thereby preventing defects such as an afterimage which may becaused when the liquid crystal display panel is driven.

As a result, the plurality of pixel electrodes 191 and shieldingelectrodes 199 may be positioned on the transparent filter 330.

Next, FIG. 13 illustrates an example in which the thin film transistorpanel 100 according to the exemplary embodiment is almost the same asthat of the exemplary embodiment illustrated in FIG. 12, but three colorfilters 230 having different colors overlap with each other to form anoverlapping portion OP. That is, the overlapping portion OP may includea first color filter 230_1, a second color filter 230_2 thereon, and athird color filter 230_3 thereon.

Next, referring to FIG. 14, the thin film transistor panel 100 accordingto the exemplary embodiment is almost the same as that of the exemplaryembodiment illustrated in FIGS. 10A and 10B, but may further include asecond passivation layer 180 b positioned between the color filter 230and the transparent filter 330. The second passivation layer 180 b maybe made of an organic insulating material, an inorganic insulatingmaterial such as SiOC, a compound of the organic insulating material andthe inorganic insulating material, or the like. A dielectric constant ofthe second passivation layer 180 b may be 3.5 or less, but is notlimited thereto.

The second passivation layer 180 b includes a portion covering the dataline 171. The second passivation layer 180 b may be formed on the entiresurface of the substrate 110 as illustrated in FIG. 14, or may be formedonly at a part of the substrate 110 so as to cover the data line 171.The second passivation layer 180 b lowers a parasitic capacitancebetween the data line 171 and the pixel electrode 191 or the opposedelectrode of the adjacent pixel to reduce a signal delay of the dataline 171.

The viscosity of the second passivation layer 180 b is properlycontrolled to control the flatness of the substrate 110. A height of theupper surface of the second passivation layer 180 b in the transmittingarea of the white pixel PX_W may be smaller than a height of the uppersurface of the second passivation layer 180 b in the transmitting areasof the color pixels PX_1, PX_2, and PX_3, and a difference in height mayvary according to the viscosity of the second passivation layer 180 b.

In the exemplary embodiment, the thickness of the color filter 230positioned at the bottom may be about 1.5 μm to about 2.5 μm, but is notlimited thereto.

According to the exemplary embodiment, a transparent filter 330 and atransparent spacing member 350 are formed on the second passivationlayer 180 b.

The transparent filter 330 includes a portion positioned in thetransmitting area of the white pixel PX_W. The transparent filter 330 ispositioned at a portion where the height of the upper surface of thesecond passivation layer 180 b is small so as to compensate for adifference in height of the second passivation layer 180 b. Thedifference in height according to a position may be reduced to somedegree by controlling the viscosity of the second passivation layer 180b, but the height of the upper surface of the second passivation layer180 b in the white pixel PX_W may be relatively low. According to theexemplary embodiment, since the transparent filter 330 is formed in thetransmitting area of the white pixel PX_W, the sum of the thicknesses ofthe second passivation layer 180 b and the color filter 230 in the colorpixels PX_1, PX_2, and PX_3 may be similar to or substantially the sameas the sum of the thicknesses of the second passivation layer 180 b andthe transparent filter 330 in the white pixel PX_W. That is, the heightof the upper surface of the second passivation layer 180 b in the colorpixels PX_1, PX_2, and PX_3 and the height of the upper surface of thetransparent filter 330 in the white pixel PX_W are substantially similarto each other, and as a result, the flatness may be entirely improved.

As a result, a cell gap of the white pixel PX_W may be similar to orsubstantially the same as cell gaps of the color pixels PX_1, PX_2, andPX_3. Then, when the liquid crystal display panel is viewed from theside, it is possible to prevent a color coordinate from being distorted.Particularly, according to the exemplary embodiment, since thetransparent filter 330 which is simultaneously formed with thetransparent spacing member 350 is formed in the white pixel PX_W byusing the second passivation layer 180 b of which the viscosity iseasily controlled, the overall flatness is more easily controlled.

In the exemplary embodiment, the capping layer 80 may be omitted.

Besides, various features and effects of the exemplary embodiment ofFIGS. 10A and 10B may be equally applied even to the exemplaryembodiment, and the duplicated description will be omitted.

Next, FIG. 15 illustrates an example in which the thin film transistorpanel 100 according to the exemplary embodiment is almost the same asthat of the exemplary embodiment illustrated in FIG. 14, but three colorfilters 230 having different colors overlap with each other to form anoverlapping portion OP. That is, the overlapping portion OP may includea first color filter 230_1, a second color filter 230_2 thereon, and athird color filter 230_3 thereon.

Besides, various features and effects of the exemplary embodiment ofFIGS. 14 and 11 may be equally applied even to the exemplary embodiment,and the duplicated description will be omitted.

Next, referring to FIG. 16, the thin film transistor panel 100 accordingto the exemplary embodiment is almost the same as that of the exemplaryembodiment illustrated in FIG. 14, but positions of the capping layers80 may be different from each other. For example, as illustrated in FIG.16, the capping layer 80 is positioned below the second passivationlayer 180 b, and may be positioned on the second color filter 230_2 ofthe overlapping portion OP and the first passivation layer 180 a. Thecapping layer 80 may prevent the color filter 230 therebelow from beinglifted and suppress the contamination of the liquid crystal layer 3 dueto an organic material such as a solvent flowing into from the colorfilter 230, thereby preventing defects such as an afterimage which maybe caused when the liquid crystal display panel is driven.

As a result, the plurality of pixel electrodes 191 and shieldingelectrodes 199 may be positioned on the transparent filter 330 and thesecond passivation layer 180 b.

Next, FIG. 17 illustrates an example in which the thin film transistorpanel 100 according to the exemplary embodiment is almost the same asthat of the exemplary embodiment illustrated in FIG. 16, but three colorfilters 230 having different colors overlap with each other to form anoverlapping portion OP. That is, the overlapping portion OP may includea first color filter 230_1, a second color filter 230_2 thereon, and athird color filter 230_3 thereon.

Besides, various features and effects of the exemplary embodiment ofFIGS. 16 and 11 may be equally applied even to the exemplary embodiment,and the duplicated description will be omitted.

Referring now to FIG. 18, the thin film transistor panel 100 accordingto the exemplary embodiment is almost the same as that of the exemplaryembodiment illustrated in FIG. 10, but the transparent spacing member350 is not positioned on the overlapping portion OP, but positioned atanother place except for the transmitting area of the pixel, forexample, a place overlapping with the light blocking member (ifpresent), the thin film transistor, and the signal lines such as thegate line and the data line 171.

In this case, heights of the upper surface of the overlapping portion OPwhere at least two of the plurality of color filters 230 overlap witheach other and the upper surface of the transparent spacing member 350may be different from each other and substantially the same as eachother. As illustrated in FIG. 18, when the upper surface of theoverlapping portion OP is higher than the upper surface of thetransparent spacing member 350, the overlapping portion OP forms themain spacer CS_M together with the capping layer 80 thereon and thelike, and the transparent spacing member 350 may form the sub spacerCS_S. Unlike this, when the upper surface of the overlapping portion OPand the upper surface of the transparent spacing member 350 aresubstantially the same as each other, the overlapping portion OP and thetransparent spacing member 350 may serve as the same spacer CS.

Next, FIG. 19 shows an example in which the opposed panel according tothe exemplary embodiment is almost the same as that of the exemplaryembodiment illustrated in FIG. 18, but three color filters 230 havingdifferent colors overlap with each other to form the overlapping portionOP. That is, the overlapping portion OP may include a first color filter230_1, a second color filter 230_2 thereon, and a third color filter230_3 thereon.

Besides, various features and effects of the exemplary embodiment ofFIG. 18 and the exemplary embodiment of FIG. 11 may be equally appliedeven to the exemplary embodiment, and the duplicated description will beomitted.

Next, referring to FIG. 20, the thin film transistor panel 100 accordingto the exemplary embodiment is almost the same as that of the exemplaryembodiment illustrated in FIG. 18, but positions of the capping layers80 may be different from each other. For example, as illustrated in FIG.20, the capping layer 80 is positioned below the transparent filter 330and the transparent spacing member 350, and may be positioned on thecolor filter 230 and the first passivation layer 180 a. The cappinglayer 80 may prevent the color filter 230 therebelow from being liftedand suppress the contamination of the liquid crystal layer 3 due to anorganic material such as a solvent flowing into from the color filter230, thereby preventing defects such as an afterimage which may becaused when the liquid crystal display panel is driven.

As a result, the plurality of pixel electrodes 191 and shieldingelectrodes 199 may be positioned on the transparent filter 330.

Next, FIG. 21 shows an example in which the opposed panel according tothe exemplary embodiment is almost the same as that of the exemplaryembodiment illustrated in FIG. 20, but three color filters 230 havingdifferent colors overlap with each other to form the overlapping portionOP. That is, the overlapping portion OP may include a first color filter230_1, a second color filter 230_2 thereon, and a third color filter230_3 thereon.

Besides, various features and effects of the exemplary embodiment ofFIG. 20 and the exemplary embodiment of FIG. 11 may be equally appliedeven to the exemplary embodiment, and the duplicated description will beomitted.

Next, referring to FIG. 22, the thin film transistor panel 100 accordingto the exemplary embodiment is almost the same as that of the exemplaryembodiment illustrated in FIG. 18, but may further include a secondpassivation layer 180 b positioned between the color filter 230 and thetransparent filter 330. The second passivation layer 180 b may be madeof an organic insulating material, an inorganic insulating material suchas SiOC, a compound of the organic insulating material and the inorganicinsulating material, or the like. A dielectric constant of the secondpassivation layer 180 b may be 3.5 or less, but is not limited thereto.

In the exemplary embodiment, the capping layer 80 may be omitted.

Besides, various features and effects of the exemplary embodiment ofFIGS. 18 and 14 may be equally applied even to the exemplary embodiment,and the duplicated description will be omitted.

Next, FIG. 23 illustrates an example in which the thin film transistorpanel 100 according to the exemplary embodiment is almost the same asthat of the exemplary embodiment illustrated in FIG. 22, but three colorfilters 230 having different colors overlap with each other to form anoverlapping portion OP. That is, the overlapping portion OP may includea first color filter 230_1, a second color filter 230_2 thereon, and athird color filter 230_3 thereon.

Besides, various features and effects of the exemplary embodiment ofFIGS. 22 and 11 may be equally applied even to the exemplary embodiment,and the duplicated description will be omitted.

Next, referring to FIG. 24, the thin film transistor panel 100 accordingto the exemplary embodiment is almost the same as that of the exemplaryembodiment illustrated in FIG. 22, but positions of the capping layers80 may be different from each other. For example, as illustrated in FIG.24, the capping layer 80 is positioned below the second passivationlayer 180 b, and may be positioned on the color filter 230 and the firstpassivation layer 180 a. The capping layer 80 may prevent the colorfilter 230 therebelow from being lifted and suppress the contaminationof the liquid crystal layer 3 due to an organic material such as asolvent flowing into from the color filter 230, thereby preventingdefects such as an afterimage which may be caused when the liquidcrystal display panel is driven.

As a result, the plurality of pixel electrodes 191 and shieldingelectrodes 199 may be positioned on the transparent filter 330 and thesecond passivation layer 180 b.

Next, FIG. 25 illustrates an example in which the thin film transistorpanel 100 according to the exemplary embodiment is almost the same asthat of the exemplary embodiment illustrated in FIG. 24, but three colorfilters 230 having different colors overlap with each other to form anoverlapping portion OP. That is, the overlapping portion OP may includea first color filter 230_1, a second color filter 230_2 thereon, and athird color filter 230_3 thereon.

Besides, various features and effects of the exemplary embodiment ofFIGS. 24 and 11 may be equally applied even to the exemplary embodiment,and the duplicated description will be omitted.

Next, FIG. 26 illustrates an example in which the thin film transistorpanel 100 according to the exemplary embodiment is almost the same asthat of the exemplary embodiment illustrated in FIG. 18, but the uppersurface of the overlapping portion OP is lower than the upper surface ofthe transparent spacing member 350. In this case, the overlappingportion OP forms the sub spacer CS_S together with the overcoat layer 80thereon and the like, and the transparent spacing member 350 may formthe main spacer CS_M. Unlike this, when the upper surface of theoverlapping portion OP and the upper surface of the transparent spacingmember 350 are substantially the same as each other, the overlappingportion OP and the transparent spacing member 350 may serve as the samespacer CS.

Next, FIG. 27 illustrates an example in which the opposed panelaccording to the exemplary embodiment is almost the same as that of theexemplary embodiment illustrated in FIG. 26, but three color filters 230having different colors overlap with each other to form the overlappingportion OP. That is, the overlapping portion OP may include a firstcolor filter 230_1, a second color filter 230_2 thereon, and a thirdcolor filter 230_3 thereon.

Besides, various features and effects of the exemplary embodiment ofFIG. 26 and the exemplary embodiment of FIG. 11 may be equally appliedeven to the exemplary embodiment, and the duplicated description will beomitted.

Next, referring to FIG. 28, the thin film transistor panel 100 accordingto the exemplary embodiment is almost the same as that of the exemplaryembodiment illustrated in FIG. 26, but positions of the capping layers80 may be different from each other. For example, as illustrated in FIG.28, the capping layer 80 is positioned below the transparent filter 330and the transparent spacing member 350, and may be positioned on thecolor filter 230 and the first passivation layer 180 a. As a result, theplurality of pixel electrodes 191 and shielding electrodes 199 may bepositioned on the transparent filter 330.

Next, FIG. 29 illustrates an example in which the opposed panelaccording to the exemplary embodiment is almost the same as that of theexemplary embodiment illustrated in FIG. 28, but three color filters 230having different colors overlap with each other to form the overlappingportion OP. That is, the overlapping portion OP may include a firstcolor filter 230_1, a second color filter 230_2 thereon, and a thirdcolor filter 230_3 thereon.

Besides, various features and effects of the exemplary embodiment ofFIG. 28 and the exemplary embodiment of FIG. 11 may be equally appliedeven to the exemplary embodiment, and the duplicated description will beomitted.

Next, referring to FIG. 30, the thin film transistor panel 100 accordingto the exemplary embodiment is almost the same as that of the exemplaryembodiment illustrated in FIG. 26, but may further include a secondpassivation layer 180 b positioned between the color filter 230 and thetransparent filter 330. In the exemplary embodiment, the capping layer80 may be omitted.

Besides, various features and effects of the exemplary embodiment ofFIGS. 26 and 14 may be equally applied even to the exemplary embodiment,and the duplicated description will be omitted.

Next, FIG. 31 illustrates an example in which the thin film transistorpanel 100 according to the exemplary embodiment is almost the same asthat of the exemplary embodiment illustrated in FIG. 30, but three colorfilters 230 having different colors overlap with each other to form anoverlapping portion OP. That is, the overlapping portion OP may includea first color filter 230_1, a second color filter 230_2 thereon, and athird color filter 230_3 thereon.

Next, referring to FIG. 32, the thin film transistor panel 100 accordingto the exemplary embodiment is almost the same as that of the exemplaryembodiment illustrated in FIG. 30, but positions of the capping layers80 may be different from each other. For example, as illustrated in FIG.32, the capping layer 80 is positioned below the second passivationlayer 180 b, and may be positioned on the color filter 230 and the firstpassivation layer 180 a. As a result, the plurality of pixel electrodes191 and shielding electrodes 199 may be positioned on the transparentfilter 330 and the second passivation layer 180 b.

Next, FIG. 33 illustrates an example in which the thin film transistorpanel 100 according to the exemplary embodiment is almost the same asthat of the exemplary embodiment illustrated in FIG. 32, but three colorfilters 230 having different colors overlap with each other to form anoverlapping portion OP. That is, the overlapping portion OP may includea first color filter 230_1, a second color filter 230_2 thereon, and athird color filter 230_3 thereon.

Next, referring to FIGS. 34A and 34B, the thin film transistor panel 100according to the exemplary embodiment is almost the same as that of theexemplary embodiment illustrated in FIG. 14, but the transparent filter330 and the transparent spacing member 350 are not formed. That is, inthe white pixel PX_W, a separate transparent filter is not formed and aseparate spacer for maintaining the cell gap is not formed. Accordingly,the photolithography process for forming the transparent filter and thetransparent spacing member may be omitted, and as a result, themanufacturing process is more simplified. Instead, the upper surface ofthe overlapping portion OP formed when at least two of the differentcolor filters 230 overlap with each other is formed to be higher thanthe periphery to serve as the spacer CS maintaining the cell gaptogether with the overlapping portion OP, the second passivation layer180 b thereon, the capping layer 80, and the like.

The transmitting area of the white pixel PX_W may be almost filled bythe second passivation layer 180 b. Accordingly, the thickness of thesecond passivation layer 180 b positioned in the transmitting area ofthe white pixel PX_W may be substantially the same as or larger than thethickness of the color filter 230 positioned in the transmitting area ofthe color pixels PX_1, PX_2, and PX_3. Further, the thickness of thesecond passivation layer 180 b positioned in the transmitting area ofthe white pixel PX_W may be larger than the second passivation layer 180b positioned on the color filters 230 of the color pixels PX_1, PX_2,and PX_3. Accordingly, the height of the upper surface of the secondpassivation layer 180 b in the white pixel PX_W may be the same as orlarger than the height of the upper surface of the color filter 230positioned in the transmitting area of the color pixels PX_1, PX_2, andPX_3.

Since the upper surface of the second passivation layer 180 b in thewhite pixel PX_W sags below the upper surface of the second passivationlayer 180 b in the color pixels PX_1, PX_2, and PX_3, the secondpassivation layer 180 b may include a high-flatness organic materialhaving sufficient viscosity so as to prevent the cell gap of the whitepixel PX_W from being different from the cell gap of the color pixelsPX_1, PX_2, and PX_3.

Next, FIG. 35 illustrates an example in which the thin film transistorpanel 100 according to the exemplary embodiment is almost the same asthat of the exemplary embodiment illustrated in FIGS. 34A and 34B, butthree color filters 230 having different colors overlap with each otherto form an overlapping portion OP. That is, the overlapping portion OPmay include a first color filter 230_1, a second color filter 230_2thereon, and a third color filter 230_3 thereon.

Next, referring to FIG. 36, the thin film transistor panel 100 accordingto the exemplary embodiment is almost the same as that of the exemplaryembodiment illustrated in FIGS. 34A and 34B, but positions of thecapping layers 80 may be different from each other. For example, asillustrated in FIG. 36, the capping layer 80 is positioned below thesecond passivation layer 180 b, and may be positioned on the secondcolor filter 230_2 of the overlapping portion and the first passivationlayer 180 a. As a result, a plurality of pixel electrodes 191 andshielding electrodes 199 may be positioned on the second passivationlayer 180 b.

Next, FIG. 37 illustrates an example in which the opposed panelaccording to the exemplary embodiment is almost the same as that of theexemplary embodiment illustrated in FIG. 36, but three color filters 230having different colors overlap with each other to form the overlappingportion OP. That is, the overlapping portion OP may include a firstcolor filter 230_1, a second color filter 230_2 thereon, and a thirdcolor filter 230_3 thereon.

Next, a liquid crystal display panel according to an exemplaryembodiment will be described with reference to FIGS. 38 to 44. The sameconstituent elements as the exemplary embodiments described abovedesignate the same reference numerals, and the duplicated description isomitted, but differences will be mainly described.

FIG. 38 is a layout view of three adjacent pixels of a liquid crystaldisplay panel according to still another exemplary embodiment, and FIGS.39 to 44 are cross-sectional views illustrating the liquid crystaldisplay panel illustrated in FIG. 38 taken along line XXXIX-XXXIX,respectively.

The liquid crystal display panel according to the exemplary embodimentis almost the same as those of the exemplary embodiments describedabove, but positions, structures, and the like of the color filters 230may be different from each other.

Referring to FIG. 38, transmitting areas of color pixels PX_1 PX_2, andPX_3 and a white pixel PX_W may be defined by openings of the lightblocking member 220. According to the exemplary embodiment, the colorfilter 230 is positioned in the transmitting area of the white pixelPX_W. The color filter 230 positioned in the transmitting area of thewhite pixel PX_W is distinguished from the color filters 230 positionedin the color pixels PX_1 PX_2, and PX_3 to be called color filters inwhite 230_W1, 230_W2, and 230_W3. FIG. 38 illustrates an example inwhich three different color filters 230_W1, 230_W2, 230_W3 arepositioned in one white pixel PX_W, but is not limited thereto, and twodifferent color filters may be positioned.

A planar shape and a cross-sectional structure of the color filters inwhite 230_W1, 230_W2, and 230_W3 may be variously set. Referring to FIG.38, the color filters in white 230_W1, 230_W2, and 230_W3 according tothe exemplary embodiment include portions which do not overlap with eachother and are elongated in a horizontal direction or a verticaldirection, and portions of which at least parts overlap with each other.Particularly, the elongated direction in each of the color filters inwhite 230_W1, 230_W2, and 230_W3 may not be parallel to an extendingdirection of a long side of the white pixel PX_W. That is, asillustrated in FIG. 38, when the white pixel PX_W is longer in thevertical direction than the horizontal direction, the extendingdirection of each of the color filters in white 230_W1, 230_W2, and230_W3 may be substantially in a horizontal direction. Further,elongated directions of the plurality of color filters in white 230_W1,230_W2, and 230_W3 may be parallel to each other.

A portion where at least two of the plurality of color filters in white230_W1, 230_W2, and 230_W3 positioned in one white pixel PX_W overlapwith each other is similar to the overlapping portion of the liquidcrystal display panel according to the exemplary embodiments describedabove.

An example in which the color filter 230 and the light blocking member220 are positioned on the opposed panel 200 will be first described withreference to FIGS. 38 to 40.

The light blocking member 220 including an opening is positioned on thesubstrate 210, and a plurality of color filters 230 is positionedthereon. As described above, at least two color filters 230 are formedin the transmitting area of the white pixel PX_W to configure the colorfilters in white 230_W1, 230_W2, and 230_W3. The portion where at leasttwo of the color filters in white 230_W1, 230_W2, and 230_W3 overlapwith each other is distinguished from the overlapping portion of theabove exemplary embodiment to be called an overlapping portion in whiteWOP. The lowest color filter of the overlapping portion in white WOP iscalled a first color filter 230_1, and a color filter positioned at ann-th (n is a natural number of 2 or more) position thereon is called ann-th color filter 230_n. The color filters 230_1, 230_2, 230_3 in FIGS.39-44 may correspond to the color filters in white 230_W1, 230_W2, and230_W3, respectively, as illustrated in FIG. 38. Since an area, athickness, and the like of the overlapping area of the color filtersforming the overlapping portion in white WOP are the same as thosedescribed above, the detailed description will be omitted herein.

The overlapping portion in white WOP may be connected with the portionswhere the color filters in white 230_W1, 230_W2, and 230_W3 do notoverlap with each other and are elongated, and as a result, thestability of the overlapping portion in white WOP may be increased.

An overcoat layer 250 is positioned on the color filter 230 and thelight blocking member 220. The flatness on the substrate 210 may becontrolled by properly controlling the viscosity of the overcoat layer250. That is, the height of the upper surface of the overcoat layer 250in the transmitting area of the white pixel PX_W and the height of theupper surface of the overcoat layer 250 in the transmitting area of thecolor pixels PX_1, PX_2, and PX_3 may be substantially equally adjustedby properly decreasing the viscosity of the overcoat layer 250.Particularly, since at least two of color filters in white 230_W1,230_W2, and 230_W3 are positioned in the transmitting area of the whitepixel PX_W, the upper surface of the overcoat layer 250 may be preventedfrom being sunk in the white pixel PX_W, and as a result, the flatnessmay be more improved.

The overlapping portion in white WOP and the overcoat layer 250 thereonhave upper surfaces higher than the periphery to form a spacer CSmaintaining a cell gap of the liquid crystal layer 3. Accordingly, aseparate spacer needs not to be formed to reduce the number ofphotomasks.

An opposed electrode 270 is positioned on the overcoat layer 250. Theopposed electrode 270 may be patterned, and may not be formed on theoverlapping portion in white WOP forming the spacer.

The exemplary embodiment illustrated in FIG. 40 is almost the same asthe exemplary embodiment illustrated in FIG. 39, but a spacing member370 is further positioned on the overlapping portion in white WOP. Theoverlapping portion in white WOP, the overcoat layer 250 thereon, andthe spacing member 370 have upper surfaces higher than the periphery toform the spacer CS. Particularly, in the case of forming the spacer CSillustrated in FIG. 39 together, since the height of the spacer CSillustrated in FIG. 40 where the spacing member 370 is positioned isrelatively large, the spacer CS illustrated in FIG. 40 serves as themain spacer, and the spacer CS illustrated in FIG. 39 may serve as thesub spacer.

According to the exemplary embodiment, since the color filters in white230_W1, 230_W2, and 230_W3 are positioned in the white pixel PX_W, acolor coordinate of the white pixel PX_W is easily controlled bycontrolling an area and the like of the color filters in white 230_W1,230_W2, and 230_W3.

Next, an example in which the color filter 230 is positioned on the thinfilm transistor panel 100 will be described with reference to FIGS. 41to 44. In this case, the light blocking member 220 may be positioned atany one of the thin film transistor panel 100 or the opposed panel 200.

A gate conductor (not illustrated), a gate insulating layer 140, and asemiconductor layer (not illustrated) are sequentially positioned on thesubstrate 110 of the thin film transistor panel 100, and a dataconductor including a data line 171 is positioned thereon. The data line171 may be almost extended between the adjacent pixels, but is notlimited thereto.

A first passivation layer 180 a is positioned on the data conductor.

A plurality of color filters 230 is positioned on the first passivationlayer 180 a. As described above, at least two color filters 230 areformed in the transmitting area of the white pixel PX_W to configure thecolor filters in white 230_W1, 230_W2, and 230_W3. The portion where atleast two of the color filters in white 230_W1, 230_W2, and 230_W3overlap with each other is called an overlapping portion in white WOP.The lowest color filter of the overlapping portion in white WOP iscalled a first color filter 230_1, and a color filter positioned at ann-th (n is a natural number of 2 or more) position thereon is called ann-th color filter 230_n. Since an area, a thickness, and the like of theoverlapping area of the color filters 230 forming the overlappingportion in white WOP are the same as those described above, the detaileddescription will be omitted herein.

Even in the exemplary embodiment, the overlapping portion in white WOPmay be connected with the portions where the color filters in white230_W1, 230_W2, and 230_W3 do not overlap with each other and areelongated, and as a result, the stability of the overlapping portion inwhite WOP may be increased.

A second passivation layer 180 b including an organic material may bepositioned on the color filters 230. The viscosity of the secondpassivation layer 180 b is properly controlled to control the flatnessof the substrate 110. Particularly, according to the exemplaryembodiment, since the color filters in white 230_W1, 230_W2, and 230_W3are formed in the transmitting area of the white pixel PX_W, the uppersurface of the second passivation layer 180 b is not sunken in thetransmitting area of the white pixel PX_W where a separate white filteris not formed. That is, the height of the upper surface of the secondpassivation layer 180 b in the transmitting area of the white pixel PX_Wmay be substantially the same as the height of the upper surface of thesecond passivation layer 180 b in the transmitting area of the colorpixels PX_1, PX_2, and PX_3, and as a result, the flatness on thesubstrate 110 may be improved.

The color filters in white 230_W1, 230_W2, and 230_W3 are positioned inthe white pixel PX_W, a color coordinate of the white pixel PX_W iseasily controlled by controlling an area and the like of the colorfilters in white 230_W1, 230_W2, and 230_W3.

A capping layer 80 may be positioned on the second passivation layer 180b. Unlike this, the capping layer 80 may be omitted.

A plurality of pixel electrodes 191 is positioned on the capping layer80.

The overlapping portion in white WOP and the second passivation layer180 b thereon have upper surfaces higher than the periphery to form aspacer CS maintaining a cell gap of the liquid crystal layer 3.Accordingly, a separate spacer needs not to be formed to reduce thenumber of photomasks.

Next, referring to FIG. 42, the thin film transistor panel 100 accordingto the exemplary embodiment is almost the same as that of the exemplaryembodiment illustrated in FIG. 41, but positions of the capping layers80 may be different from each other. For example, as illustrated in FIG.42, the capping layer 80 may be positioned on the color filter 230 andbelow the second passivation layer 180 b.

Next, referring to FIG. 43, the thin film transistor panel 100 accordingto the exemplary embodiment is almost the same as that of the exemplaryembodiment illustrated in FIG. 42, but a spacing member 370 may befurther positioned on the overlapping portion in white WOP. Theoverlapping portion in white WOP, the capping layer 80 thereon, thesecond passivation layer 180 b, and the spacing member 370 have uppersurfaces higher than the periphery to form the spacer CS. Particularly,in the case of forming the spacer CS illustrated in FIG. 42 together,since the height of the spacer CS illustrated in FIG. 43 where thespacing member 370 is positioned is relatively large, the spacer CSillustrated in FIG. 43 serves as the main spacer, and the spacer CSillustrated in FIG. 42 may serve as the sub spacer.

Next, referring to FIG. 44, the thin film transistor panel 100 accordingto the exemplary embodiment is almost the same as that of the exemplaryembodiment illustrated in FIG. 41, but a spacing member 370 may befurther positioned on the overlapping portion in white WOP. Theoverlapping portion in white WOP, the capping layer 80 thereon, thesecond passivation layer 180 b, and the spacing member 370 have uppersurfaces higher than the periphery to form the spacer CS. Particularly,in the case of forming the spacer CS illustrated in FIG. 41 together,since the height of the spacer CS illustrated in FIG. 44 where thespacing member 370 is positioned is relatively large, the spacer CSillustrated in FIG. 44 serves as the main spacer, and the spacer CSillustrated in FIG. 41 may serve as the sub spacer.

While the inventive concept has been described in connection with whatis presently considered to be practical exemplary embodiments, it is tobe understood that the inventive concept is not limited to the disclosedembodiments, but, on the contrary, is intended to cover variousmodifications and equivalent arrangements included within the spirit andscope of the appended claims.

DESCRIPTION OF SYMBOLS

-   -   80: Capping layer    -   100: Thin film transistor panel    -   110, 210: Substrate    -   140: Gate insulating layer    -   171: Data line    -   180 a, 180 b: Passivation layer    -   191: Pixel electrode    -   200: Opposed panel    -   220: Light blocking member    -   230: Color filter    -   270: Opposed electrode    -   350: Transparent spacing member    -   370: Spacing member

What is claimed is:
 1. A display device, comprising: a first substrateand a second substrate facing each other; a plurality of color filterspositioned on the first substrate and representing different colors fromeach other, wherein at least two of the plurality of color filtersoverlap with each other on the first substrate to form an overlappingportion, and the overlapping portion forms a first spacer; a transparentfilter positioned on the first substrate and positioned in atransmitting area of a white pixel; and a second spacer including thesame material as the transparent filter, wherein the overlapping portionis positioned in the transmitting area of the white pixel.
 2. A displaydevice, comprising: a first substrate and a second substrate facing eachother; a plurality of color filters positioned on the first substrateand representing different colors from each other; and a passivationlayer positioned on the first substrate and the color filters andincluding an organic material, wherein at least two of the plurality ofcolor filters overlap with each other on the first substrate to form anoverlapping portion, the overlapping portion forms a spacer, a thicknessof the passivation layer positioned in a transmitting area of a whitepixel is larger than or substantially the same as a thickness of a colorfilter of the color filters positioned in a transmitting area of a colorpixel, and the thickness of the passivation layer positioned in thetransmitting area of the white pixel is larger than a thickness of thepassivation layer positioned in the transmitting area of the colorpixel.
 3. The display device of claim 2, wherein: a thickness of a firstcolor filter positioned at a top of the overlapping portion is about 30%to about 70% of a thickness of a second color filter positioned belowthe first color filter.
 4. The display device of claim 3, wherein: afirst width of an overlapping region of the first color filter with thesecond color filter is about 20 μm to about 50 μm.
 5. The display deviceof claim 4, wherein: the overlapping portion further includes a thirdcolor filter positioned below the second color filter, and a width of anoverlapping region of the second color filter with the third colorfilter is larger than the first width.
 6. A display device, comprising:a first substrate and a second substrate facing each other; and aplurality of color filters positioned on the first substrate andrepresenting different colors from each other, wherein the plurality ofcolor filters includes at least two color filters in white positioned ina transmitting area of a white pixel and representing different colorsfrom each other, and two or more of the at least two color filters inwhite overlap with each other in the transmitting area of the whitepixel to form an overlapping portion in white.
 7. The display device ofclaim 6, wherein: a color filter in white of the at least two colorfilters in white includes a portion which does not overlap with anothercolor filter in white of the at least two color filters in white and iselongated in the transmitting area of the white pixel.
 8. The displaydevice of claim 7, wherein: elongated portions of the at least two colorfilters in white are substantially parallel to each other.
 9. Thedisplay device of claim 8, wherein: an elongated portion of theelongated portions is connected with the overlapping portion in white.10. The display device of claim 6, wherein: the overlapping portion inwhite forms a spacer.
 11. The display device of claim 10, furthercomprising: a passivation layer positioned on the plurality of colorfilters.
 12. The display device of claim 11, wherein: the passivationlayer includes an organic material, and wherein a height of an uppersurface of the passivation layer positioned in the transmitting area ofthe white pixel is substantially the same as a height of an uppersurface of the passivation layer positioned in a transmitting area of acolor pixel.
 13. The display device of claim 6, further comprising: aspacing member positioned on the overlapping portion in white.
 14. Thedisplay device of claim 6, wherein: a thickness of a first color filterpositioned at a top of the overlapping portion in white is about 30% toabout 70% of a thickness of a second color filter positioned below thefirst color filter.
 15. The display device of claim 14, wherein: a firstwidth of an overlapping region of the first color filter with the secondcolor filter is about 20 μm to about 50 μm.
 16. The display device ofclaim 15, wherein: the overlapping portion further includes a thirdcolor filter positioned below the second color filter, and a width of anoverlapping region of the second color filter with the third colorfilter is larger than the first width.